MOTION CONTROL DEVICE FOR VEHICLE

• US 20110035129A1
• Filed: 08/04/2010
• Published: 02/10/2011
• Est. Priority Date: 08/05/2009
• Status: Active Grant

• Current Assignee: Advics Company Limited (Aisin Corp.)
• Original Assignee: Advics Company Limited (Aisin Corp.)
• Inventors: Yasui, Yoshiyuki
• Granted Patent: US 8,639,427 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60T 8/17551 determining control parameters related to vehicle stability used in the regulation, e.g. by calculations involving measured or detected parameters
• CPC Class Codes: B60T 8/17558 specially adapted for collision avoidance or collision mitigation road vehicle drive control systems for collision avoidance otherwise than by controlling a particular sub-unit B60W30/09
• CPC Class Codes: B60T 8/885 using electrical circuitry

Abstract

A motion control device for a vehicle includes a braking means for applying a brake torque to each of a plurality of wheels of the vehicle, an avoidance control means for calculating a first target quantity, used for an avoidance control for applying the brake torque to each wheel via the braking means in order to avoid an emergency state of the vehicle, a stabilization control means for determining a target wheel, to which the brake torque is applied, out of the wheels and calculating a second target quantity used for a stabilization control for applying the brake torque to the target wheel in order to ensure a vehicle stability, and a brake control means for controlling the brake torque applied to a non-target wheel based on the first target quantity and controlling the brake torque applied to the target wheel based on the first and second target quantities.

Claims

1. A motion control device for a vehicle, comprising:

a braking means for applying a brake torque to each of a plurality of wheels of the vehicle;

an avoidance control means for calculating a first target quantity, which is used for an avoidance control for applying the brake torque to each of the plurality of the wheels via the braking means in order to avoid an emergency state of the vehicle;

a stabilization control means for determining a target wheel out of the plurality of the wheels as a target of a supply of the brake torque and calculating a second target quantity used for a stabilization control for applying the brake torque to the target wheel via the braking means in order to ensure a stability of the vehicle; and

a brake control means for controlling the brake torque to be applied to a non-target wheel, which differs from the target wheel, on the basis of the first target quantity and controlling the brake torque to be applied to the target wheel on the basis of the first target quantity and the second target quantity.

2. A motion control device for a vehicle, comprising:

a braking means for applying a brake torque to each of a plurality of wheels of the vehicle;

an avoidance control means for calculating a first target quantity and a first actual quantity, which are used for an avoidance control for applying the brake torque to each of the plurality of the wheels via the braking means in order to avoid an emergency state of the vehicle;

a stabilization control means for determining a target wheel out of the plurality of the wheels as a target of a supply of the brake torque and calculating a second target quantity used for a stabilization control for applying the brake torque to the target wheel via the braking means in order to ensure a stability of the vehicle; and

a brake control means for calculating the brake torque to be applied to a non-target wheel, which differs from the target wheel, on the basis of the first target quantity corresponding to the non-target wheel and calculating the brake torque to be applied to the target wheel on the basis of the first actual quantity corresponding to the non-target wheel and the second target quantity corresponding to the target wheel.

3. A motion control device for a vehicle, comprising:

a braking means for applying a brake torque to each of a plurality of wheels of the vehicle;

an avoidance control means for calculating a target deceleration used for an avoidance control for avoiding an emergency state of the vehicle by applying the brake torque to each of the plurality of the wheels via the braking means;

a stabilization control means for determining a target wheel out of the plurality of the wheels as a target of a supply of the brake torque and calculating a target slip velocity used for a stabilization control for ensuring a stability of the vehicle by applying the brake torque to the target wheel via the braking means; and

a brake control means for controlling the braking means on the basis of the target deceleration and the target slip velocity, wherein

the motion control device for the vehicle further comprises a wheel speed obtaining means for obtaining an actual speed of each of the plurality of the wheels, and the brake control means controls the brake torque to be applied to a non-target wheel, which differs from the target wheel, on the basis of the target deceleration and controls the brake torque to be applied to the target wheel on the basis of the target slip velocity corresponding to the target wheel and the actual speed of the wheel corresponding to the non-target wheel.

4. The motion control device for the vehicle according to claim 3 wherein, the brake control means controls the brake torque to be applied to the target wheel on the basis of a value, which is obtained by subtracting the target slip velocity corresponding to the target wheel from the actual speed of the wheel corresponding to the non-target wheel.